If you see an error message about invalid certificates when uploading certs or trying to send push notifications to iOS devices what does this mean?
The certs uploaded for your app in your Settings > App Certs/Keys as your Apple push notification certificates are invalid. These certs can be invalid for a number of reasons:
you could be using the incorrect type of file/cert you may have uploaded a cert for a different app a development cert could be in the place of the enterprise cert or vice a versa the certs could be out of date
If you encounter such an error you should consult the documentation on Setting up APNs Certificates in the iOS integration documentation and double check you have uploaded the correct certs.